<template>
  <div class="login-container">
    <!-- 导航栏 -->
    <van-nav-bar class="page-nav-bar" title="登录">
      <van-icon vv-if="$route.query.redirect" slot="left" name="cross" @click="$router.back()"/>
    </van-nav-bar>

    <!-- 登录表单 -->
    <van-form @submit="onSubmit" ref="loginForm">
      <van-field maxlength="11" v-model="user.mobile" :rules="userNameRules.mobile" name="mobile" placeholder="请输入手机号">
        <i slot="left-icon" class="iconfont iconshouji"></i>
      </van-field>
      <van-field maxlength="6" v-model="user.code" :rules="userNameRules.code" name="code" placeholder="请输入验证码">
        <i slot="left-icon" class="iconfont iconyanzhengma"></i>
        <template #button>
          <van-count-down v-if="isCountDownShow" @finish="isCountDownShow=false" :time="1000*60" format="ss s" />
          <van-button v-else class="send-sms-btn" native-type="button" @click="onSenSms" round size="small" type="dafault"
            >发送验证码</van-button
          >
        </template>
      </van-field>
      <div class="login-btn-wrap">
        <van-button class="login-btn" block type="info" native-type="submit"
          >登录</van-button
        >
      </div>
    </van-form>
  </div>
</template>

<script>
import { login, SenSms } from '@/api/user'

export default {
  name: 'Loginpage',
  // components: {},
  // props: {},
  data () {
    return {
      user: {
        mobile: '13911111114',
        code: '246810'
      },
      userNameRules: {
        mobile: [{ required: true, message: '手机号不能为空' }, {
          pattern: /^1[3|5|7|8]\d{9}$/,
          message: '手机号格式错误'
        }],
        code: [{ required: true, message: '验证码不能为空' }, {
          pattern: /^\d{6}$/,
          message: '验证码格式错误'
        }]
      },
      isCountDownShow: false
    }
  },
  // computed: {},
  // watch: {},
  // created: {},
  // mounted: {},
  methods: {
    async onSubmit () {
      // 1.获取表单数据
      const user = this.user
      // 2.表单验证
      this.$toast.loading({
        message: '登录中...',
        forbidClick: true, // 禁用点击背景
        duration: 0 // 持续时间,默认2秒
      })
      // 3.提交表单数据
      try {
        const { data } = await login(user)
        // 设置数据到vuex
        this.$store.commit('setUser', data.data)
        this.$toast.success('登录成功')
        this.$router.push(this.$route.query.required || '/')
      } catch (err) {
        if (err.response.status === 400) {
          this.$toast.fail('手机号或验证码错误')
        } else {
          this.$toast.fail('登录失败,请稍后重试')
        }
      }
    },
    async onSenSms () {
      // 1.手机校验
      try {
        await this.$refs.loginForm.validate('mobile')
      } catch (err) {
        return console.log('验证失败', err)
      }
      // 2.控制倒计时
      this.isCountDownShow = true
      // 3.请求发送验证码
      try {
        await SenSms(this.user.mobile)
        this.$toast('发送成功')
      } catch (err) {
        if (err.response.status ===
         429) {
          this.isCountDownShow = false
          this.$toast('发送太频繁了,请稍后重试')
        } else {
          this.$toast('发送失败,请稍后重试')
        }
      }
    }
  }
}
</script>

<style lang="less" scoped>
.login-container {
  .iconfont {
    font-size: 37px;
  }
}
.send-sms-btn {
  width: 152px;
  height: 46px;
  line-height: 46px;
  background-color: #ededed;
  font-size: 22px;
  color: #666;
}
.login-btn-wrap {
  padding: 53px 33px;
  border: 0;
  .login-btn {
    background-color: #6db4fb;
    border: none;
  }
}
.send-sms-btn {
  border: none;
}
</style>
